Erosion

Cycles page ||= Erosion || erosion- erosion is when water, wind or glaciers breaks down rocks and moutains. topsoil- topsoil is the darker layer of soil. humus- humus is pieces of dead plants and animals. run off- run off is when water runs down a hill or a moutain. || How dose erosion work in the project? What dose the dirt look like after the exeriment? || Soil Erosion and Pollutilon, Darlene R. Stille, 1990, 5-26 Science Fun With Mud And Dirt, Rose Wyler, 1986, 1 Rocks and Soil, Maria Gorden, 1996, 22-23 Earth: Slow Changes, Melissa McDaiel, 2007, 2-26 Scence, Dr. Danieletal, 2002,C 62- C 63 ||
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 * =  ||= Erosion is when water, wind, or a glacier wheres down rock or washes away dirt. ||
 * =  ||< weathering- weathering is when weather ruins land.
 * =  ||= How dose the water efect the dirt?
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